# Phase 6: Fragility Scorecard

Z₁ coefficient across subsamples, classified by stability.

| DV | Subsample | Z₁ (full) | Z₁ (sub) | N | Classification |
|---|---|---|---|---|---|
| ca_gdp | OECD only | 29.765** | -28.261 | 1615 | COLLAPSED |
| ca_gdp | Non-OECD | 29.765** | 16.632 | 6009 | COLLAPSED |
| ca_gdp | High income | 29.765** | 84.566*** | 2421 | Amplified |
| ca_gdp | Low income | 29.765** | -55.380 | 2589 | COLLAPSED |
| ca_gdp | Safe issuer | 29.765** | 64.324** | 904 | Amplified |
| ca_gdp | EMU | 29.765** | -134.604*** | 413 | SIGN-REVERSED |
| gross_savings_gdp | OECD only | 114.147*** | 18.764 | 1611 | COLLAPSED |
| gross_savings_gdp | Non-OECD | 114.147*** | 126.061*** | 5031 | Robust |
| gross_savings_gdp | High income | 114.147*** | 91.116*** | 2367 | Robust |
| gross_savings_gdp | Low income | 114.147*** | 82.147* | 2082 | Robust |
| gross_savings_gdp | Safe issuer | 114.147*** | 122.598*** | 871 | Robust |
| gross_savings_gdp | EMU | 114.147*** | 36.244 | 413 | COLLAPSED |
| gross_investment_gdp | OECD only | 32.616*** | 31.091 | 1611 | COLLAPSED |
| gross_investment_gdp | Non-OECD | 32.616*** | 39.311*** | 5009 | Robust |
| gross_investment_gdp | High income | 32.616*** | 22.970** | 2388 | Robust |
| gross_investment_gdp | Low income | 32.616*** | 87.231*** | 2082 | Amplified |
| gross_investment_gdp | Safe issuer | 32.616*** | 38.550** | 871 | Robust |
| gross_investment_gdp | EMU | 32.616*** | 2.809 | 413 | COLLAPSED |
| nfa_gdp | OECD only | -0.966 | 1.296 | 1613 | Null in both |
| nfa_gdp | Non-OECD | -0.966 | -2.253 | 6099 | Null in both |
| nfa_gdp | High income | -0.966 | -9.549*** | 2453 | Emergent (null→significant) |
| nfa_gdp | Low income | -0.966 | 2.076 | 2576 | Null in both |
| nfa_gdp | Safe issuer | -0.966 | -16.274*** | 901 | Emergent (null→significant) |
| nfa_gdp | EMU | -0.966 | 4.356 | 412 | Null in both |

*Classification: Robust (same sign, similar magnitude), Magnitude-attenuated (<50% of full), COLLAPSED (significant→null), SIGN-REVERSED (flips sign).*
